Trigonulina
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| Trigonulina | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Bivalvia |
| Family: | Verticordiidae |
| Genus: | Trigonulina d'Orbigny, 1853 |
| Synonyms[1] | |
| |
Trigonulina is a genus of small carnivorous bivalves in the family Verticordiidae.[1][2] It was first named by Alcide d'Orbigny with the type taxon T. ornata in 1853, though T. novemcostata was named first originally as Hippagus novemcostatus in 1850 which is now unaccepted.[3] Trigonulina shells are known to be extremely small, ranging from about 1-3.6 millimeters long.[2] They live at depths of 18-850 meters below the ocean's surface and burrow under sand to feed on microscopic crustaceans using adapted inhalant siphons.[2] T. canaliculata and T. ornata live in the western Atlantic Ocean[4][2] while T. novemcostata is native to the South China Sea.[3]
